手机电量已经充满，电池图标仍显示充电状态

SystemUI/src/com/android/systemui/BatteryMeterView.java

public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging) { ... }

if (level < 100 ) {

　　　mDrawable.setCharging(pluggedIn && charging);

  }else{

            mDrawable.setCharging(false);

 }